Samuel e



(No Model.)

I S. E. MOWER. ELECTRIC MOTOR MECHANISM.

No. 474,328. Patented May 3.1892.

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UNITED STATES PATENT OFFICE.

SAMUEL E. MOWVER, OF NEIV HAVEN, CONNECTICUT, ASSIGNOR TO HENRY G.THOMPSON do SONS, OF SAME PLACE.

ELECTRIC-MOTOR MECHANISM.

SPECIFICATION forming part of Letters Patent No. 474,328, dated May 3,1892.

Application filed May 21, 1891- Serial No. 393,600. (No model.)

T on whom it may concern: of the said disk 0, pinions c and gears c of aBe it known that I, SAMUEL E. MOWER, of diameter substantially largerthan the said New Haven, county of New Haven, State of pinions. Thegears c mesh with a substan- Connecticut, have invented an Improvementtially small gear 0 formed integral with or 55 5 in Electric-MotorMechanism, of which the secured to the collar 11 The pinions c meshfollowing description, in connection with the with a substantially largegear 0 formed inaccompanying drawin gs,isaspecification,like tegral withor secured to a sleeve 0 loose on letters on the drawings representinglike the armature-shaft. The sleeve 0 has keyed parts. or otherwisesecured to it a wheel 0 having [O This invention, relating to therotation of on it two series of sprocket-teeth e 0 which a shaft or axleby means of electricity, is esreceive, respectively, sprocket-chains c 0pecially adapted to be used on electricallywhich in turn pass oversprocket-wheels c propelled cars, and is an improvement upon 0", securedto axles a a. The disk 0 is enthe mechanism shown and described inUnited circled by a friction strap or brake 0 having 15 States PatentNo. 440,717, granted to me Noits ends adapted to be brought together tovember 18, 1890. hold the disk stationary by a rod c having My presentinvention has for its object to its end screw-threaded to engagethreaded construct apparatus as will be described, openings or socketsin the ends of the said wherebythespeed-reducingmechanismshown strap. 120 and described in the said patent may be In operation, the car beingin motion, the employed to transmit motion to a shaft or armature-shaftb, the collar b and gear 0, axle from the armature-shaft of an electricfirmly secured thereon, are continuously romotor independent of the saidaxle. tated, and the disk 0 being held in fixed posi- The particularfeatures of my invention tion by the brakeband the gears c are re 25will be pointed out in the claims at the end volved, rotating thepinions c and thereby of this specification. rotating the gear 0 andsprocket wheel. Figure l is a top or plan view of a sufficient While theear is at rest the friction or brake portion of a car-truck providedwith an elecstrap 0 is loose upon or relaxed from the trio-motormechanism embodying my invendisk 0, and the said disk being loose on the30 tion to enable it to be understood; Fig. 2, a collar 12 will travelaround said shaft with longitudinal section of the apparatus shown thegears c and 0 without producing movein Fig. 1 on line a: a; Fig. 3, asectional detail ment of the gear 0 which is held stationary on line y11 Fig. 1. by the load. \Vhen it is desired to start the The axles a a,provided with the wheels a car, the operator turns the rod 0 so as to 35are and may be of any usual or well-known bring together the ends of thesplit ring.,brakeconstruotion.such as now commonly employed band, orfriction-strap, and thus clutch the on electric-railway cars. Thecar-axles a a, disk 0- and hold it stationary. The gear 0 reas hereinrepresented, support bars a a upon volving with the shaft, rotates thegears c which rest cross-bars a of", constituting the and pinion c andthereby causes the gear 0 0 supports for an electric-motor mechanism. torevolve. The car may be set in motion at The electric motor, which maybe of anyusual any desired or required speed by regulating or well-knowntype of machine and the lieldthe friction upon the disk 0 In practicethe magnets of which are represented by a, has inclosing case b willpreferably be filled or its armature-shaft b extended through thepartially filled with oil or other lubricant. 5 5 box or case b andsupported at its ends by The gears and pinions herein representedbearings in said box or case. are toothed gears and pinions, and therebyThe armature-shaft b has keyed or otherpositively engage each other anddo not slip. wise fastened to it a collar upon which is I do not desiretolimit myself to a sprocketsupported frictionally a disk 0, throughwhich chain passing over and driven by sprocket- I03 50 is extended,preferably, a plurality of shafts wheels as a means of transmittingpower from 0', upon which are mounted, on opposite sides the sleeves onthe armature-shaft to the drivin g-axle, as it is obvious that othermeans may be employed.

I claim 1. The combination, with an axle, of an elec- 5 tric motor torotate it independent of the said axle, a sprocket-wheel on the axle, asprocketchain, a sleeve on the armature-shaft of the motor, asprocket-wheel on said sleeve, a gear on said sleeve, andreducing-gearing between said gear on the sleeve and the armature-shaft, substantially as described.

2. The combination, with an axle, of an electric motor to rotate itindependent of the said axle, a sprocket-wheel on the axlo,a sleeve onthe armature-shaft of the motor, a sprocketwheel on said sleeve, andsprocket-chain, a gear on said sleeve, a disk, as c, mounted on thearmature-shaft, one or more shafts carried thereby and provided with apinion in mesh with the said gear on the sleeve and also with a gearmeshing with a gear fast to the shaft, and means for varying therelative speed of the disk and shaft, substantially as described.

3. The combination, with an axle, of an electric motor to rotate it, asprocket-wheel on'the axle, a sprocket-chain, a sleeve on the shaft andsprocket-wheel thereon, a gear on said sleeve, a disk, as c, loose onthe shaft, one or more shafts carried by it and provided with a pinionengaging the gear on the sleeve, and with a gear engaging a gear fast tothe shaft and with a friction device engaging said disk, substantiallyas described.

4. The combination, with two axles, of a sprocket-wheel on each axle, anelectric motor and supports therefor for supporting it between the saidtwo axles, a sleeve on the armature-shaft of said motor, two sprocket-40 wheels on said sleeve, two sprocket-chains the armature-shaft andmeans for controlling the operation of said reducing-gearing,substantially as described.

5. In' combination with an axle of a railroad car, an electric motormounted on an axle between the driving-wheels to rotate the same, asleeve mounted on the amature-shaft for transmitting the power to theaxle, and

speed-reducing mechanism connecting the sleeve to the armature-shaft,comprising a toothed gear on the sleeve, a toothed gear on the shaft, adisk or drum located between said gears and mounted loosely on theshaft, differential toothed gears and pinions borne by said disk oneither side thereof, adapted to respectively engage the toothed gear "onthe shaft and toothed gear on the sleeve, substantially as described.

6. In combination with an axle of a railroad-ear, an electric motormounted on the axle under the car and between the drivingwheels torotate the same, a sleeve loosely mounted on the armature-shaft fortransmitting the power to the axle, and speed-reducing mechanismconnecting the sleeve to the armature-shaft, comprising a toothed gearon the sleeve, a toothed gear on the shaft, a disk or drum locatedbetween said gears and mounted loosely on the shaft, differentialtoothed gears and pinions borne on either side by said disk, adapted,respectively, to engage the toothed gear on the shaft and toothed gearon the sleeve, and means for holding and releasing said disk or drum atwill, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

SAMUEL E. MOWER.

lVitnesses:

HENRY G. THoMPsoN, L. H. DAYTON.

